Boris M. Gombač (born 15 September 1945) is a Slovene historian from Italy.
He was born to a middle class Slovene family in Trieste, Italy.
He studied history at the University of Ljubljana, Slovenia (then part of former Yugoslavia).
During the difficult process of Slovenia's secession from Yugoslavia, he was active in civil society organizations that worked for the protection and eventual return of Slovenian conscripts drafted in the Yugoslav People's Army.
He was member of the Slovenian-Italian Cultural-Historical Commission, established by the governments of the two countries to shed light on the historical relationship between the two peoples from 1880 to 1954.